/* 设置 body 全局样式 */
body {
    margin: 0;
    padding: 0;
    font-family: "Microsoft Yahei", sans-serif;
    background: url('images/background.png') no-repeat center center fixed;
    background-size: cover;
}

/* 登录容器 */
.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 30px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
    text-align: center;
    background-image: url("images/loginPortion.png");
}

/* Logo 图标 */
.logo img {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
}

/* 输入框组 */
.input-group {
    margin: 15px 0;
    text-align: left;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

.input-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 14px;
}

/* 登录按钮 */
button {
    width: 100%;
    padding: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #45a049;
}

/* 提示信息 */
#message {
    color: red;
    margin-top: 15px;
}